Doc: flesh out fmgr/README's description of context-node usage.
commit29452de7341b0effbc275d7e139ade83cebda69f
authorTom Lane <tgl@sss.pgh.pa.us>
Sat, 3 Dec 2022 15:50:39 +0000 (3 10:50 -0500)
committerTom Lane <tgl@sss.pgh.pa.us>
Sat, 3 Dec 2022 15:50:39 +0000 (3 10:50 -0500)
treee8f403e79f77befaa602266a30752560c102c454
parent2605643a3a9d789f3a5935810e874c00243d7576
Doc: flesh out fmgr/README's description of context-node usage.

I wrote this to provide a home for a planned discussion of error
return conventions for non-error-throwing functions.  But it seems
useful as documentation of existing code no matter what becomes of
that proposal, so commit separately.
src/backend/utils/fmgr/README